50 likes | 182 Views
On board software change. Remove « hot pixels » from Background Light curve. Exoplanet channel. Easiest on background image. Constraints: The most simple algorithms with a minimum number of modifications in: the onboard software (the same algorithm than on seismo channel)
E N D
On board software change. Remove « hot pixels » from Background Light curve. Exoplanet channel. Easiest on background image. SC25
Constraints: The most simple algorithms with a minimum number of modifications in: the onboard software (the same algorithm than on seismo channel) the telemetry (write new TM in unused words) just one new product (compatibility with the processing used to day)) Only one new control parameter (TC) Modification of the PLTM processing. The new product will be used only to control the process behavior. This new software will be uploaded just before the short run SRa01 (march 2008) SC25
Pipe line evolution. • For the « alarm mode » • Adding flag for the SAA crossing. • Adding flag for outliers (bright events only) • Remove the depointing correction (the transit detection works on • white light) • Computation of a mean background LC per CCD computing • the median of all background windows at each exposure. • Correction of all star LC of one CCD with the same background LC. • Good correction of the orbital variations but a small biais remain • on the absolute background value. SC25
Pipe line evolution. At the end of each run all the data are processed with more efficient methods. For the four first runs corrections of « hot » pixels will be performed with a method adapted from Scargle. SC25
Pipe line evolution. Use of the colors to include the automatic detection of hot pixels. A new hot pixel doesn’t perturb the 3 colors simultaneously. The number of colored LC will be Increased. Limit magnitude is 14.5 for LRc01 and will be 15.5 for the next run. Improvement of the computation of the depointing on the exoplanet channel. Red Green Blue SC25